Related Party Costs and Expenses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Related party cost and expense:
Related party expenses, total	$ 13,970	$ 12,290
SAC Holdings
Related party cost and expense:
U-Haul lease expenses	655	661
U-Haul commission expenses	12,520	10,934
Private Mini
Related party cost and expense:
U-Haul commission expenses	$ 795	$ 695